Readymade Concrete Septic Tanks

The basic design is a big concrete box, buried in the back yard, and connect to all all the house’s toilets and sink drain lines (mounted on the front of it). A few hundred feet of perforated drain pipe are layed in shallow channels and the channels are filled with gravel. Everything is covered with topsoil. If you really want to you can dump some special ‘septic tank bacteria’ in it once in a while, or have it pumped out once a year.

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Our septic tank generally consists of a tank (or sometimes more than one tank) of between 4000 and 7500 liters (1,000 and 2,000 gallons) in size connected to an inlet waste water pipe at one end and a septic drain field at the other. In general, these pipe connections are made via a T pipe, which allows liquid entry and exit without disturbing any crust on the surface.

Waste water enters the first chamber of the tank, allowing solids to settle and scum to float. The settled solids are anaerobically digested, reducing the volume of solids.The liquid component flows through the dividing wall into the second chamber, where further settlement takes place, with the excess liquid then draining in a relatively clear condition from the outlet into the leach field, also referred to as a drain field or seepage field, depending upon locality.

Features of our Septic tanks :

  • Odor-free.
  • Besides periodic inspection and pumping of the septic tank, should last for decades with no maintenance.
  • Should last about 50 years.
  • Lquid volume sufficient for a 24 hour fluid retention time at maximum sludge depth and scum accumulation.
  • sufficient sludge storage space.
  • outlet devices to prevent sludge or scum from discharging to the drain-field.
  • venting provisions to direct gases safely away.

Periodic preventive maintenance is required to remove the irreducible solids that settle and gradually fill the tank, reducing its efficiency. In most jurisdictions this maintenance is required by law.